EN
SR EN IEC 60947-4-2:2023
Aparataj de joasă tensiune. Partea 4-2: Contactoare şi demaroare de motoare. Controlere, demaroare și demaroare progresive cu semiconductoare pentru motoare electrice
IEC 60947-4-2:2020 applies to semiconductor motor controllers, starters and soft-starters which can include a series mechanical switching device, intended to be connected to circuits the rated voltage of which does not exceed 1 000 V AC. This fourth edition cancels and replaces the third edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - scope exclusions; - editorial correction of notes and hanging paragraphs; - reference to IEC 62683-1; - safety aspects related to: - general aspects; - limited energy circuits; - electronic circuits; - mention of dedicated wiring accessories; - power consumption measurement; - alignment to IEC 60947-1:2020.
Status :
In vigoare
Data aprobării : 28.04.2023
Număr de pagini : 240
ICS : 29.130.20 Aparate de conectare si comanda de joasa tensiune
Comitet tehnic : 9 - Aparataj electric de joasă tensiune
- Inlocuieste SR EN 60947-4-2:2012
- Modificat de SR EN IEC 60947-4-2:2023/A1:2025